About this tool
Convert any image to WebP using the libwebp encoder compiled to WebAssembly. WebP is a modern web image format that's typically much smaller than JPEG or PNG at the same quality. Pick a quality, see the before/after size, and download — everything runs in your browser and nothing is uploaded.
Frequently asked questions
Why convert to WebP?
WebP files are usually 25–35% smaller than a comparable JPEG and far smaller than PNG, which means faster pages. It's supported by all modern browsers.
Is my image uploaded to a server?
No. The image is decoded on a canvas and encoded by the WASM libwebp codec entirely in your browser — nothing leaves your device.